Any ideas what I should check on my MultiWii/Tricopter setup? I have everything assembled and setup as per the instructions found on MULTIWIICOPTER.COM/wiki.

However, when I attach the battery, and ARM the board, the ESCs never give me the ARMED tone. They act as though they are getting no signal from the MultiWii. ThE ESCs are F20a style from HobbyKing. They have been flashed.

I can get the ESCs to arm individually if I plug them Directly into the receiver. It's as though something is not happening at the board level.